102212029940 has 24 divisors (see below), whose sum is σ = 219880514952. Its totient is φ = 39887621120.

The previous prime is 102212029939. The next prime is 102212029949. The reversal of 102212029940 is 49920212201.

It can be written as a sum of positive squares in 4 ways, for example, as 799079824 + 101412950116 = 28268^2 + 318454^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102212029897 and 102212029906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212029949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62323589 + ... + 62325228.

It is an arithmetic number, because the mean of its divisors is an integer number (9161688123).

Almost surely, 2^102212029940 is an apocalyptic number.

102212029940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102212029940 is an abundant number, since it is smaller than the sum of its proper divisors (117668485012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102212029940 is a wasteful number, since it uses less digits than its factorization.

102212029940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124648867 (or 124648865 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 102212029940 in words is "one hundred two billion, two hundred twelve million, twenty-nine thousand, nine hundred forty".